Merger History Tree history

The first merger history tree calculated from an N-body simulation was published in Fig 2 of RQP93 and in Fig 2 of RY93. The first merger history tree from a semi-analytical halo model (i.e. not from an N-body simulation) was drawn schematically as Fig 6 in LC93. The hybrid method of combining N-body simulations with semi-analytical formulae, via dark matter merger history trees, was first published briefly in the conference proceedings RQP93 and as a full article in RQPR97. Cosmologists at Durham, Oxford, Cambridge, IAP, ESO and the Milano Sep 1992 "Observational Cosmology" meeting were aware (seminars, informal discussion) of merger history tree analysis and the hybrid method and their early results in Sep/Oct 1992. N-body merger history trees were later calculated and used by K+99 and ON01.

Non-N-body merger history trees were also combined with semi-analytical formulae by KWG93.